Is my platy pregnant or not?

[sandro]

Sorry if this question has been asked and answered a million times before, but I've spent the last few weeks scouring the web for a definitive answer (with no luck). I think one of my platies is pregnant, but being new at this I can't figure it out for sure. I don't see the black spot, but that may be because of her overall colour. However, she's been steadily expanding for the last month. I've taken a few pictures, could someone please let me know if she is or isn't pregnant? Thanks!

Also, what kind of platy is she? The store where I got her from didn't specify.

 

[snowyangel]

I dont own them, but by judging by the swelling on the belly she looks very ripe

 

[William]

She looks extremely heavily pregnant on a similar scale to this one: http/fish.orbust.net/forums/index.php?sh...=0&#entry164522